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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/012346
Kind Code:
[Problem] To provide an LIBS-type object sorting device that carries out LIBS analysis on objects to be sorted while transporting the same using a conveyor and sorts the objects on the basis of the analysis. [Solution] An LIBS-type object sorting device is provided with, in the following order, a three-dimensional shape measurement means for acquiring a group of spatial coordinates for the upper surface of an object to be sorted viewed from above the conveyer, an LIBS analysis means for carrying out chemical composition analysis on the object to be sorted while irradiating the same with laser light, and a conveyance path switching means for switching the conveyance path of the object to be sorted. The device further includes a computation means for determining an analysis section for LIBS analysis and a control means for moving the position of a beam and, when the arrival of the analysis section is detected on the basis of the conveyor movement amount, causing the laser light to be irradiated while the focus position of the beam moves along the analysis section in correspondence with the movement amount.

KOYANAKA, Shigeki (16-1 Onogawa, Tsukuba-sh, Ibaraki 69, 〒3058569, JP)
KOBAYASHI, Kenichirou (16-1 Onogawa, Tsukuba-sh, Ibaraki 69, 〒3058569, JP)
Application Number:
Publication Date:
January 18, 2018
Filing Date:
July 04, 2017
Export Citation:
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NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (3-1 Kasumigaseki 1-chome, Chiyoda-ku Tokyo, 21, 〒1008921, JP)
International Classes:
G01N21/71; B07C5/34; G01B11/24
Foreign References:
Other References:
WERHEIT,P. ET AL.: "Fast single piece identification with a 3D scanning LIBS for aluminium cast and wrought alloys recycling", JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, vol. 11, 26 November 2011 (2011-11-26), pages 2166 - 2174
Attorney, Agent or Firm:
ITOH, Atsushi (Togeki Building 4F, 4-1-1 Tsukiji Chuo-k, Tokyo 45, 〒1040045, JP)
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